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Refrigerator or freezer temperature sensor (also called a thermistor). The thermistor monitors the refrigerator, freezer, and evaporator temperature and sends the temperature reading to the control board.

Defrost sensor

Fresh food thermistor upper

Evaporator defrost harness

Freezer sensor

Sensor temp

Freezer temp sensor

Freezer defrost sensor kit
The temperature sensor (thermistor) in your Haier refrigerator measures the air temperature and tells the control board when to run the compressor. When the thermistor fails, you'll notice the fridge running constantly, not cooling properly, or cycling erratically. A faulty sensor is one of the most common reasons a Haier fridge stops maintaining the right temperature without actually freezing up.
Replacing the thermistor is a straightforward repair — the sensor is usually located in the freezer or refrigerator section and clips into place. Haier thermistors are model-specific, so entering your exact model number ensures you get the right ohm rating and connector type. We carry genuine OEM Haier sensors that restore proper temperature control and energy efficiency.
A failed thermistor is one of the top reasons. The sensor constantly tells the control board the fridge is warm, so the compressor never shuts off. The compressor may be working fine — the sensor is sending the wrong signal. Test the sensor's resistance with a multimeter at the actual fridge temperature; if the reading doesn't match the spec, the thermistor has failed and should be replaced.
Haier thermistors vary by model series and compartment location (fresh food vs. Freezer section). Use your complete model number in the lookup tool — it will show the exact sensor assembly, connector type, and ohm rating your fridge requires. Haier uses different sensor types depending on whether your model has electronic or mechanical controls.
Yes. The defrost cycle depends on temperature sensing. If the thermistor isn't reading correctly, the defrost heater may run too often (causing frost), or not at all (allowing frost to build up). Replacing a faulty sensor often restores proper defrost operation within a few cycles.
Almost always. Haier thermistors cost $20 to $50, and the 10-minute repair is very DIY-friendly. Even if you pay for professional installation, it's a fraction of refrigerator replacement — and it solves the problem if the sensor is truly the culprit. Always verify the sensor reading before condemning the compressor or main control board.


Ensure your Haier refrigerator maintains optimal temperature with genuine OEM sensor and thermistor parts from Repair Clinic. These parts are critical for accurate temperature regulation and efficient cooling. Use our model number lookup tool to find the exact sensor or thermistor for your specific Haier refrigerator model. Enjoy the convenience of same-day shipping, our Price Match Guarantee, and No-Hassle 365-Day Returns for a reliable shopping experience. For expert installation guidance, visit our Refrigerator Repair Help page, or browse other options like Haier Refrigerator Parts for additional support.
On Haier refrigerators, the model number is commonly printed on a label inside the fresh food compartment, along the side wall, or on the back of the appliance. Check behind the crisper drawer and along the compartment ceiling if you do not see it right away. The label may also include the serial number, so copy the complete model number carefully, including any letters, numbers, or suffixes. Enter it in the model number search to pull up the parts matched to your unit. This filters the full Haier refrigerator parts catalog, not just one part category, so you can identify parts that fit your exact model. You order with confidence knowing the fit is right.

The right online resources take the guesswork out of a Haier Refrigerator repair. Repair Clinic's diagnostic articles, part testing videos, exploded-view diagrams, and step-by-step written repair guides walk owners and technicians through each stage from symptom identification to final reassembly. Look up your model number to confirm the correct OEM part before you order.

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